Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / vlan.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/vlan.h b/qemu/roms/ipxe/src/include/ipxe/vlan.h
new file mode 100644 (file)
index 0000000..083c219
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/vlan.h
@@ -0,0 +1,70 @@
+#ifndef _IPXE_VLAN_H
+#define _IPXE_VLAN_H
+
+/**
+ * @file
+ *
+ * Virtual LANs
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+/** A VLAN header */
+struct vlan_header {
+       /** Tag control information */
+       uint16_t tci;
+       /** Encapsulated protocol */
+       uint16_t net_proto;
+} __attribute__ (( packed ));
+
+/**
+ * Extract VLAN tag from tag control information
+ *
+ * @v tci              Tag control information
+ * @ret tag            VLAN tag
+ */
+#define VLAN_TAG( tci ) ( (tci) & 0x0fff )
+
+/**
+ * Extract VLAN priority from tag control information
+ *
+ * @v tci              Tag control information
+ * @ret priority       Priority
+ */
+#define VLAN_PRIORITY( tci ) ( (tci) >> 13 )
+
+/**
+ * Construct VLAN tag control information
+ *
+ * @v tag              VLAN tag
+ * @v priority         Priority
+ * @ret tci            Tag control information
+ */
+#define VLAN_TCI( tag, priority ) ( ( (priority) << 13 ) | (tag) )
+
+/**
+ * Check VLAN tag is valid
+ *
+ * @v tag              VLAN tag
+ * @ret is_valid       VLAN tag is valid
+ */
+#define VLAN_TAG_IS_VALID( tag ) ( (tag) < 0xfff )
+
+/**
+ * Check VLAN priority is valid
+ *
+ * @v priority         VLAN priority
+ * @ret is_valid       VLAN priority is valid
+ */
+#define VLAN_PRIORITY_IS_VALID( priority ) ( (priority) <= 7 )
+
+extern struct net_device * vlan_find ( struct net_device *trunk,
+                                      unsigned int tag );
+extern unsigned int vlan_tag ( struct net_device *netdev );
+extern int vlan_can_be_trunk ( struct net_device *trunk );
+extern int vlan_create ( struct net_device *trunk, unsigned int tag,
+                        unsigned int priority );
+extern int vlan_destroy ( struct net_device *netdev );
+
+#endif /* _IPXE_VLAN_H */